Home / 2,543.18-3,815.16-1,082.72

Finding the Fourth Proportional to 2,543.18, 3,815.16 and 1,082.72

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Solution

The fourth proportional to 2,543.18, 3,815.16 and 1,082.72 is: 1,624.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.18 : 3,815.16 = 1,082.72 : x
  2. Step 2: Convert to fraction form
    2,543.18/3,815.16 = 1,082.72/x
  3. Step 3: Cross multiply
    2,543.18x = 3,815.16 × 1,082.72
  4. Step 4: Simplify right side
    2,543.18x = 4,130,750.04
  5. Step 5: Solve for x
    x = 4,130,750.04/2,543.18
  6. Step 6: Final answer
    x = 1,624.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.